Home / 18,858,528,074.30-28,287,792,111.45-7,813,373,258.30

Finding the Fourth Proportional to 18,858,528,074.30, 28,287,792,111.45 and 7,813,373,258.30

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Solution

The fourth proportional to 18,858,528,074.30, 28,287,792,111.45 and 7,813,373,258.30 is: 11,720,059,887.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858,528,074.30 : 28,287,792,111.45 = 7,813,373,258.30 : x
  2. Step 2: Convert to fraction form
    18,858,528,074.30/28,287,792,111.45 = 7,813,373,258.30/x
  3. Step 3: Cross multiply
    18,858,528,074.30x = 28,287,792,111.45 × 7,813,373,258.30
  4. Step 4: Simplify right side
    18,858,528,074.30x = 221,023,078,419,953,123,328
  5. Step 5: Solve for x
    x = 221,023,078,419,953,123,328/18,858,528,074.30
  6. Step 6: Final answer
    x = 11,720,059,887.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.